Ignition system for explosion-engines.



R. VARLBY IGNITION SYSTEM 2011 EXPLOSION ENGINES.

APPLICATION FILED JUNE 4, 1908.

91 5,391 Patented Mar. 16, 1909.

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Wi t mm 3 m -uc- I 1 ['0 z la @Hoz 112135 I To all whom it concern:

Um'rEDsTArEs P rENT "onnron. j

A CORPORATION OF NEW JERSEY.

IGNITION sirs'rnm non EXPLOSION-ENGINES.

Be it known that I, Rronann VARLEY, a citizen of the United States, residing at Englewood, in the county of Ber en and State .of New. Jersey, have invente certain new and useful Improvementsin I nition Systems for Explosion-Engines, 0% which the following is a full, olear,'and exact descriptlon.

This'invention relates to ignition systems for explosion engines, and more articularly to an arrangement by which tl ie duration of the primary circuit closure is varied with res ect to the stroke of thee ine.

he ordinary circuit controllmg device for an ignition system is driven by the engine and closes the circuits of an induction coil, or, more generally, a plurality of induction coils at fixed intervals and'for a predetermined duration or dwell. The longer the period of circuit closure or dwell, the more certain the ignition becomes, but, on, the other hand, a long circuit closure consumes an excessive'battery current, and, in many g The present application is there re'Rdistin-,

the fact that in the present app cases uselessly, since the engine ordinarily operates properly with very short current duration. Some means for regulation is desirable, especially as the controlling. device is driven by the en in'e so that the rimary dwell is less at big speeds than at lbw speeds.

It is the rincipal object of my present invention to ave the primary circuit closure or dwell controllable so as to be suited to the conditions.

are, at certain times, connected inseries with one another and, at other times, used individually to change the primal? dwell.

guished from my co-pendin'g apElicsionJg ca on dwell is always s rtened -by contacts.

rounded by insulating. material, so that the e different Specification of Letters Patent. Patented March 16,1909.

Application filed June 4, 1908. Serial N0. 438,543.

connecting in a series circuit two segments or contacts of different angular extent, while,

I RICHARD VARLEY, OF ENGLEWOOD, NEW JERSEY, ASSIGNOB TO THE KUTOCOIL COMPANY, j

in said 00- ending application, the primary I dwell is engthened by including two segments or contacts of different angular extent in a multiple circuit. The present invention more particularly consists in the features of construction andcombination as hereinafter set forth .and finall particularly pointed out in the a pended 0 arms.

In the drawing: igure 1 is a diagrammatic view showing a circuit controller and ignitionsystem embodying the principles of my invention; Fig. 2 is a vertical sectional View of the controller. Fig. 3 is a artial sectional view on the line IIIIII of ig. 2. Fi 4- illustrates a still further modification.

n the form of the invention shown in Figs.

1, 2, and 3, there-are provided a plurality of induction coils C C C C. B designates the battery or current source, and 1 denotes broadly a circuit controller ada ted to close the primary circuits of the co' s in a predetermined order and in such a manner that the duration of the primary circuit closure or dwell can be varied. The controller 1 preferably includes a casing or housing 2 of insulating material, having an upper bank of segments 3 and a lower bank of segments formed by a single metallic ring 4 which is cut away along spaced sections 5 at its interior surface. In this way'there are presented a number of portions 6 of the ring, which form the equivalent of segments or The ring 4 is embedded or sur contact portions 6 of the ring are. alone exposed at the interior surface of the insulating housing 2. 8 desi ates the revoluble element of the contro er, which may be made in any desired way, so as to prevent two separate arms in rotatable engaging relation w1th segments 3 and the contacts 6,respectively. For this purpose the separate arms are located in different planes corresponding to the planes of said segments and contact ring. I prefer the construction shown, making use of a flier 9 fixed to the shaft 10 and having sets of arms 11 and 12, respectively carrying the spring pressed rollers 13 and 14. The roller 13 is adapted to engage the segments 3, while the roller 14 revolves in the path of the contacts 6. The rollers are preferably disposed on diametrically opposite sides of the shaftlO, so as to give a balanced 45 I roller 13 to ground, wire n, contact 17, switch be adopted as shown in Fi 1.

dwell.

these rollers are engaging segments -or contacts. 35.

construction. The disposition of the various segments and contacts-is such that the roller 13 passes onto-a segment 3 at the same mstant that the roller 14- passes onto a contact 6. The segments 3 are, however, of considerably greater angular extent than the contacts 6, so that the contact'of the roller 13 is continued for a longer interval withits segment than the engagement of the roller 14 with its contact'6. With a controller of this construction, an arrangement of circuits may 1', l l and Z designate connections rom' the various segments 3 to one primary terminal of the various induction coils, the other primar terminal of-these coils being connected wit the battery B, through a wire m. 16 designates a switchv adapted to connect the other terminal of the battery to ground through contact 17 and wire n, or to the ring 4 through contact 18 and a terminal 19.

The operation is as follows: Assumin that the parts are in the relation shown in 11 ig. 1, the circuit of the primary of induction coil C is just on the point of being completed as follows: battery, B, wire m, primary coil C wire 1*, se ment 3, roller 13, through the .flier to ro or 14, contact 6 and ring 4, terminal 19, wire '0, contact 18, switch arm 16, back to battery B. Since this circuit includes both of the rollers 13 and 14, it is evident that it can continue only as long as he circuit will, therefore, be terminated as soon as the roller 14 passes ofi of its short contact 60f the ring '4. This circuit condition therefore corres onds to a short rimary circuit closure or If now t e switch arm 16 is moved over onto contact 17, the primary circuit of coil C will be closed during the entire interval that the roller 13 is' passing across the segment 3, since the flier is grounded through its supporting shaft. The circuit is as follows: battery B,-wire m, wire 1, segment 3,

circuit conditions from a long to a short rimary -dwellf and vice versa is, thereore, accomplished by a movement of the switch arm 16, but the change does not effect any variation in the .instant when the primary circuits are initially closed for the various coils. v

In Fig. 4 I have illustrated a construction of controller ve similar to that of Fig. 1, except that, in p ace of roller 14, I make use of a spring-impelled plunger 25. In place of a ring 4, I make use 0 a ring 4 having slightly rounded contact points 6. The plunger 25 is slightly depressed inward in assing these their respective respects the operation and the circuit connections are exactly like those of Fig.1.

What I claim is: -1. In an ignition system, an induction coil and a primary circuit controller therefor,

including a plurality of rotating devices in difierent planes, contacts in the planes of different of said devices, the contacts of different devices havinga diflerent angular I extent, and means for including the contacts of one, or the contacts of more than one of said planes in series, in said primary circuit,

whereby the primary dwell is varied, the initial engagement of said contacts and devices being made simultaneously in the respective planes.

. 2. In an 1 n1t1on system having a primary circuit, a pair of members adapted to have a continuous angular displacement wlth respect to one another, contacts carried by one of said'members, and contact devices in different planes carried by the other of said members, the different contact devices respectively having an engagement of different angular extent with the said contacts, and means for 3. In an ignitlon system, an induction coil and a primary circuit controller therefor,

including a pluralit of rotating 1 contact 5 devices in different p anes, sets of contacts of contact devlces, and a single switch for put-.-

I different angular extent in the paths of said ting the contacts of one set, or the contacts of w more than one set simultaneously in series in said primary circuit, whereby the primary, dwell is varied, the initial engagement of said 1 contacts and devices bein made simul'- taneously 1n the respective p anes.

4. In an ignition system, an inductioncoil and a primary circuit controller therefor, lncluding a plurality of rotating contact devices indifferent planes, sets of contacts of different angular extent in'the paths of said contact devices, and means for lncluding the contacts of only one set, or the contactsof more than one set simultaneously in-series, in said primary circuit, whereby the primary dwell is varied, the initial engagement of said contacts and devices being made simultaneously in the respective planes.

' 5. In an ignit1on system, an induction coil and a primary circuit controller therefor, including a plurality of rotating devices in different planes, segments in the path of one of said devices, and a notched ring havin contact portionsin the ath of the other vo said contact devices, sai segments and said contact portions of the ring having a different angular extent, and means whereby said segments alone, or saidsegments' and said 0' n n I a I ring in series, are included 1n said primary circuit, whereby the primary dwell is varied, the initial engagement of said contacts and devices being made simultaneously. in the respective planes.

6. In an i nition system, a pair of membersadaptef to have a continuous angular displacement with respect to one another in one direction, segments'carried by one of said members, a contact device carried by the other member to engage said segments,

a notched metallic part having contact 'ortions, a contact device in a from'the first engaging said notched metallic 'part during the said angular displacement of ifferent p we the members, means whereby said segments and their contact device alone, or said so ments and both contact devices and said notched metallic part in series, are included in the rimary circuits of said ignition system, where y the primary dwell is varied, the initial engagement of said contacts and devices being made simultaneously in the res ective planes.

n Witness whereof, I subscribe my signature, in the presence of two witnesses.

' v RICHARD VARLEY. Witnesses:

WALDO M. 0min, MARY S. HANDY. 

